Lamp structures



FIG. 1 shows a perspective view of the lamp structures;

FIG. 2 shows a top side elevation view thereof;

FIG. 3 shows a front plan view thereof;

FIG. 4 shows a rear plan view thereof;

FIG. 5 shows a left side elevation view thereof;

FIG. 6 shows a right side elevation view thereof;

FIG. 7 shows a bottom side elevation view thereof; and,

FIG. 8 shows an exploded view thereof.

The broken lines of FIG. 1 to FIG. 8 illustrate portions of the lamp structures that form no part of the claimed design. 

CLAIM The ornamental design for a lamp structure, as shown and described. 